Volume selection ?

Mailing List

Home

Forum Home

Softimage

Carrara

trueSpace

Dir3d-l

Maya - a powerful 3D animation and visual effects software

Macromedia Flash Development

Subjects

•	Cameras
•	scaleDown command
•	black out solved
•	Aircraft Tutorial
•	Mathematical XYZ ?
•	Its done This vs That
•	Its done first week
•	recommendations for screen video captures?
•	3DExplorer "Oddity "
•	New Director
•	ProTeam renewals
•	Fuel 's new websites (X post)
•	Blue peter create a make toy
•	targeting groups question
•	XPost: Shockwave 3D game ( sort of )
•	RES: RES: RES: Fish Modeling
•	Emitting particles from object intersection
•	Fuel 's new websites (X post)
•	Texturing
•	Big Break Contest Videos
•	New Plugins
•	Models and Texture on my updated site
•	Error Installing Patch tS6 6
•	Plasma?
•	Looking for Inspiration
•	Weird EMail Q
•	It 's done first week ?
•	Cherry not cranberry
•	New game
•	Camera Animation Problem
•	Particle plugins?

Volume selection ?

Volume selection ?

2004-06-17 - By Raffaele "ThE_JacO" Fragapane

Back

Reply: 1 2 3 4 5 6

There is no straightforward way.

Volume and collision objects in the SDK are logged wishes (I logged them
myself during the last two cycles and I’m sure others want them as well) but
they are not an easy implementation.

You’ll have to write your own volume checking, that with a polygonal object
can be fairly expensive.

It’s now about a year I’m struggling to keep my library updated but it takes
some proper coding to do it properly (caching and optimized progressive
checks).

If you feel like tackling the task, game tutorials are your best bets, since
all collision and volume detection systems in games need to be real-time you
can find some pretty good examples of blazing fast code.

If all you need is checking for centers inside a bounding box volume then
it’s pretty fast to write.

All you need to do is get the bbox for that volume and check center
coordinates against deltas of the box’ corners.

anything more complex, like checking for actual objects and not just their
centers or using actual shape volumes, requires expensive custom code.

If anybody can correct me and prove me wrong about the toughness of the task
I’d love it, since it’s now a long time I struggle with this kind of issues.

~Raffaele Fragapane
~Freelance Technical Animator & TD
~Senior TA @ Peerless Camera

__ __

From: owner-xsi@(protected) [mailto:owner-xsi@(protected)] On Behalf Of
Harry Bardak
Sent: Thursday, June 17, 2004 10:58 AM
To: XSI@(protected)
Subject: [scripting] Volume selection ?

hi everyone.

Well i would like to script something like this :

When i select a box, every object in this box is select.

So in other word how can i detect if an object is inside another one.
Wich way should i follow to do that ?

thanks by advance.

harry.

---
Incoming mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.638 / Virus Database: 409 - Release Date: 21-Mar-04 (See http://Mar-04.ora-code.com)

---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.638 / Virus Database: 409 - Release Date: 21-Mar-04 (See http://Mar-04.ora-code.com)

<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft
-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:st1=
"urn:schemas-microsoft-com:office:smarttags" xmlns="http://www.w3.org/TR/REC
-html40">

<head>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=Windows-1252 (See http://ows-1252.ora-code.com)">

<meta name=Generator content="Microsoft Word 11 (filtered medium)">
<o:SmartTagType
namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="PersonName"
downloadurl="http://www.microsoft.com"/>

<style>

</style>

</head>

<body bgcolor=silver lang=EN-US link=blue vlink=purple>

<div class=Section1>

There is no straightforward way.<o:p></o:p
>

Volume and collision objects in the SDK
are logged wishes (I logged them myself during the last two cycles and I’m
sure others want them as well) but they are not an easy implementation.<o:p></o
:p>

<o:p> </o:p>

You’ll have to write your own volume
checking, that with a polygonal object can be fairly expensive.<o:p></o:p>

<o:p> </o:p>

It’s now about a year I’m
struggling to keep my library updated but it takes some proper coding to do it
properly (caching and optimized progressive checks).<o:p></o:p>

<o:p> </o:p>

If you feel like tackling the task, game
tutorials are your best bets, since all collision and volume detection systems
in games need to be real-time you can find some pretty good examples of blazing
fast code.<o:p></o:p>

<o:p> </o:p>

If all you need is checking for centers
inside a bounding box volume then it’s pretty fast to write.<o:p></o:p>

All you need to do is get the bbox for
that volume and check center coordinates against deltas of the box’
corners.<o:p></o:p>

anything more complex, like checking for
actual objects and not just their centers or using actual shape volumes,
requires expensive custom code.<o:p></o:p>

<o:p> </o:p>

If anybody can correct me and prove me
wrong about the toughness of the task I’d love it, since it’s now a
long time I struggle with this kind of issues.<o:p></o:p>

<div>

~Raffaele Fragapane 
~Freelance Technical Animator & TD 
~Senior TA @ Peerless Camera<o:p></o:p>

</div>

<div>

<div class=MsoNormal align=center style='margin-left:36.0pt;text-align:center'>


<hr size=2 width="100%" align=center tabindex=-1>

</div>

From:
owner-xsi@(protected) [mailto:owner-xsi@(protected)] On Behalf Of Harry Bardak 
Sent: Thursday, June 17, 2004
10:58 AM 
To: <st1:PersonName w:st="on">XSI
@(protected)</st1:PersonName> 
Subject: [scripting] Volume
selection ? <o:p></o:p>

</div>

<o:p> </o:p>

<div>

hi everyone.<o:p></o:p
>

</div>

<div>

 <o:p></o:p>

</div>

<div>

Well i would like to script
something like this : <o:p></o:p>

</div>

<div>

When i select a box, every object in
this box is select. <o:p></o:p>

</div>

<div>

 <o:p></o:p>

</div>

<div>

So in other word how can i detect if
an object is inside another one. 
Wich way should i follow to do that ? <o:p></o:p>

</div>

<div>

 <o:p></o:p>

</div>

<div>

thanks by advance. <o
:p></o:p>

</div>

<div>

 <o:p></o:p>

</div>

<div>

harry.<o:p></o:p>

</div>

</div>

</body>

</html>
 

--- 
Incoming mail is certified Virus Free. 
Checked by AVG anti-virus system (http://www.grisoft.com). 
Version: 6.0.638 / Virus Database: 409 - Release Date: 21-Mar-04 (See http://Mar-04.ora-code.com) 
 

--- 
Outgoing mail is certified Virus Free. 
Checked by AVG anti-virus system (http://www.grisoft.com). 
Version: 6.0.638 / Virus Database: 409 - Release Date: 21-Mar-04 (See http://Mar-04.ora-code.com)